I’m a high school science teacher, and about 15 years ago I spent a year teaching science in Bogotá, Colombia at a private school. Rich kids, raised in Spanish and English. Great kids, in fact.

I was teaching genetics with one group and we were looking at blood types. Unlike North America, identification in Colombia includes blood type (seriously, this is a great idea for emergency situations, no idea why it isn’t here) so it’s common for people to know the blood types of their entire family. We did blood tests in class and the students were able to see that it matched up with their ID info. We then used this info with their family’s blood types to look at pedigrees.

One of the girls in the class came up to me after class with a concern. I don’t remember the exact blood types, but her parents blood types didn’t fit. Basically, there was no way her dad was her dad. I fumbled through some bullshit possibility of a mutation, but I learned my lesson - never again will I have students do blood type pedigrees with their families.

>>780146>(seriously, this is a great idea for emergency situations, no idea why it isn’t here)
>there was no way her dad was her dad
You've answered your own question.

There is so much cousin and sister airwolfing in some parts that there would be too many questions raised. A politician wouldn't be able to claim that her teenage daughter's illegitimate baby was the politicians child. A titan of industry who slept with his secretary and covered the whole thing up by secretly adopting their child, raising the orange haired freak as their own, could possibly be exposed as a scumbag.